Aluminium oxide is impermeable and, unlike the oxide layers on many other metals, it adheres strongly to the parent metal. If damaged mechanically, aluminiumâs oxide layer repairs itself immediately.
Saliva helps remove oral waste and cavity-causing bacteria, protects teeth from decay by neutralizing harmful acids, and helps re-mineralize tooth enamel. Saliva also keeps oral tissues healthy by preventing infection by controlling bacteria and fungi in the mouth.
What is Saliva? Did you know that saliva is derived from blood? Thatâs right, saliva acts as the bloodstream in your mouth. Pretty cool right? How to Stimulate Saliva Flow. One of the best ways to stimulate the flow of saliva in your mouth is chewing. This is because it causes the muscles to compress the salivary glands, which in turn releases saliva. Saliva accomplishes a lot of things, but the four main things saliva does is: It helps to moisten and break down food. This allows you to swallow more easily and it enhances your ability to taste.